What does a SART do and when is it activated?

A. A SART replaces a lifebuoy light when activated at night

B. A SART is a satellite tracking device only used on commercial vessels

C. A SART transmits a VHF voice signal on Ch 16 every 30 seconds

D. A SART responds to 9 GHz X-band radar pulses with a series of 12 dots on the searching vessel's or helicopter's radar screen — activated when abandoning ship or MOB to assist rescuers in locating survivors

A. To send a digitally coded distress alert containing the vessel's MMSI and position automatically to all DSC-equipped stations and the Coastguard

B. To broadcast weather forecasts to other vessels

C. To make telephone calls from the vessel to shore

D. To operate the radar system remotely

A. A GPS waypoint identifier used in coastal navigation

B. Maritime Mobile Service Identity — a unique 9-digit number identifying the vessel; without it a DSC distress alert cannot identify the vessel to rescuers

C. A VHF channel number allocated by Ofcom for distress use only

D. A vessel survey certificate number required by the MCA